Headphone



FIG. 1 is a perspective view of a headphone showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an enlarged view of the area taken along lines A—A, B—B, C—C and D—D of FIG. 4.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a headphone, as shown and described. 